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    • Errors trying to compile and link Hello World out of the box

    Posted by drvtech on 2017-10-17 13:23 United Kingdom

    I am a complete novice with System Workbench and don't really know my way around C++ compilers. I've been protected from them by using the Arduino environment for several years but, as i want to use an STM32 processor on a project, I thought I would dip my toe in the water with System Workbench and use a proper dev environment, rather than using Arduino_STM32
    Tried to compile the Hello World example and it failed because the PATH variable didn't seem to point to where the installer had put arm-none-eabi and make.exe. After doing some searching of this forum I managed to understand and correct that but now, although the compiler seems to run I get a string of warnings (12 of them) about undefined references and then

    collect2.exe: error: ld returned 1 exit status

    If I understand this correctly there is a problem with finding libraries but I really don't know how to proceed from this point.

    I apologise in advance for asking what is probably a REALLY basic question but getting the Hello World example to compile ought to work out-of-the-box shouldn't it? And once I have just SOMETHING working I can build on that as I teach myself.

    Thanks
    Dave

    Reads: 8647
    Posted by hugoalanochoa on 2017-10-17 15:59
    have you already try the Internal builder? Go to Project->Properties->C/C++ Build and under Builder Settings select Internal builder under Builder type combo box
    Posted by drvtech on 2017-10-17 16:20 United Kingdom

    Thanks for replying. I hadn't tried that but I have now. The results are the same unfortunately.
    I don't want to clutter up the forum with loads of screen dumps but if it helps the last few lines in the console window are:-

    c:/ac6/systemworkbench/plugins/fr.ac6.mcu.externaltools.arm-none.win32_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/lib\libc.a(lib_a-isattyr.o): In function `_isatty_r':
    isattyr.c:(.text._isatty_r+0x18): undefined reference to `_isatty'
    c:/ac6/systemworkbench/plugins/fr.ac6.mcu.externaltools.arm-none.win32_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/lib\libc.a(lib_a-lseekr.o): In function `_lseek_r':
    lseekr.c:(.text._lseek_r+0x24): undefined reference to `_lseek'
    c:/ac6/systemworkbench/plugins/fr.ac6.mcu.externaltools.arm-none.win32_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/lib\libc.a(lib_a-readr.o): In function `_read_r':
    readr.c:(.text._read_r+0x24): undefined reference to `_read'
    collect2.exe: error: ld returned 1 exit status

    15:16:15 Build Finished (took 3s.511ms)


         Posted by hugoalanochoa on 2017-10-17 23:02

    can you post the steps that you follow to create the hello word program?
    (and what processor you choosed)